Radiator.



PATENTED JAN. 22, 1907. W. R. KINNEAR.

RADIATOR.

APPLIoATIoN FILED PEB, 27, 1904.

3 SHEETS-SHEET l.

.J IIIA r AIN mld'

110.841,98). h PATENTED 11111. 22, 1907. `l

W. R. KINNEAR.

-' RADIATUR.

APPLICATION FILED FEB. 27, 1904.

3 SHEETS-SHEET 2.

PATENTED JAN. 22, 1907. W. R. KINNEAR.' k

RADIATOR.

APPLIOATION FILED PEB. 2v, 1904.

3 SHEETS-SHEET 3.

flxwan'of /E M Hoznm35 1mi fumaba InvITnn STATES PATENT OFFICE.

WILLIAM R. KINNEAR, OF NEW YORK, N. Y.

RADlAToR.

Nd. sli-1,985.

Specification of Letters luatent.

Patented Jan. 22, 1-907.

Application `liled February 2,7. 1904i.. Serial No. 195,637.

To @ZZ whom, t nai/y cori/cern,.-

B'p it known that I, WILLIAM R. KINNEAR, l

a citizen of thellnited States, residin `in the city, county, and State of New Yor have invented certain new and useful Improve 'metal radiator, wherein the connection is made by striking up bosses from the opposed walls of such units and permanently unitingthem, j f l Further lobjects and advantages will appear in the followingv descri tion and will e particularly pointed out in t e claims.

In the drawings, Figure 1 is a perspective'.

I view of a sheetlmetal radiator in which In ment of the support.

several improvements may be embodie Fi 2 is a vertical section of one of-the end umts of the radiator having my improved support or foot applied thereto. Fig. 3 is an interiorview of one of the two similar sec* tions or members which make upthe supA ort lor foot. Fig. 4 is a perspective view o another embodiment of the support. Fig. 5 is a perspective view 'of still another embodi.

Fig. 6 is. avertical sectional view of the up er portion of a radiator, showing the novel orm'of connection between adjacent units. Fig. 7 is a view of a single joint, showing the same parts rolled into interlockedrelation. v

yReferring more particularly to the drawings, 1 indicates a-sheet-metal radiator unit formed from a single tube and caps 2, which close the ends of the* tube; lThe seams, by

i which the caps 2 are secured to the tube v1,

are turned outwardl to provide ribs 3 on the Isides and ends oV the unit or an endless f two sections 4', each of whi rib around the lower end v0I each unit, and these ribs are employed on some of the units as a means by which supports are secured to the radiator. The foot or supplort comprises j c is providedI with` onehalf lof a foot 6 at leach end and a groove '5, which embraces a Aportion of the endless rib of each unit above andbelow.

,These-support-sections are the same in apearan'ceandv whenplaced' together form a 'oot onA each side of t e radiator and an end-` is necessarily limited, in that the metal will less groove which completely surrounds one .or more ofthe radiator units.

.It is vpreferred to employ a radiator unit in which the rib 3 is inclined downwardly from each edge of a unit toward the center, as seen in Fi s. 1 to 4as in this construction the hold etween the foot and the unit is much stronger. In Fig. 4-instead of embracing one unit the foot surrounds two units. This form is specially adapted for lar er radiators,

and if one of these at leach end o the radiator is not sufficient `others may be placed upon some of the intermediate sections. In Fig. 5

all parts of the rib 3aare in the same horizontalplane. This form, while not as strong as some of the embodiments of my invention, will be em loyed in some instances. In all forms of t e support. the sections are provided at 02p osite points with bolt-openm s 71and are elld together by bolts 8, the hea s ofthe bolts and the nuts being countersunk.

` In connecting up the units of sheet-metal radiators Ihave heretofore disclosed the idea of, forming the connections b Vstriking up bosses from the opposed faces o the units and uniting these bosses by means of a tongue-and groove seam. In some forms of radiators and in radiators of some dimensions it is desirable to -have a greaters ace between adjacent Iinits than is obtaina le with the joint 1n the form of the tongue-andfgroove seam. That -is to say, the connectedbosses beingstruck.' up `from the flat or substantially. llat walls of the units the depth of these bosses not stand more than afcertain extent of stretching Without tear" In order to get a stil? greater space" betweenunits with a maximumdepth of bosses,

I have devised the form' of connection shown 95 in Figs. Gand 7. According to this feature of m invention-I take two plane pieces of meta and strike up or press them to form closed tapering` bosses and these closed b'osses are then further stamped to remove roo the Webor' closed end and to produce horizon.- tal flanges c, which extend outwardly from the bosses throughout their length. The units having these open flanged bosses are then-fitted together so ask to overla one-anxo 5 other, and a suitable expanding-tde consisting of'grooved rollers d and mandrele is then 'introduced in the joint and rotated while the mandrel' 1s advanced tospread the rolls untill the overlapped flanges are expanded outi 1o ward vand curved into interlocking'relatin,

so thatfa joint is produced consisting of the bosses b and the interlocked vcurved Hanges c.

The'seiianges are forced outward vconsiderably vbeyond the limit of elasticity of the metal, so as i togivcthe metal a permanent set outward ,and

since the expandingis done from the interior out-Ward, the outer flalnge beingA expanded pressure-transmitted to the inner flange, y1t

follows hat .the inner flange will be left under strains .of compression and the :outer ange under strains of tension, and .I consequently the. Will be heldin intin'iate relation and ma e afjoint that is tight against thesteam or Water that mayalie Tused as the circulating n iedium;v The joint may-be Iiirther secured by dipping in a suitable galvanizing orsolderingbath.

I'claimisi-H` o 1. l In a radiator, the combination of units having ribs thereon, and supports-compri sing fa pair of sections each section provided `with `gather endless -rib fits.

fits and the two sections when -tted together forming an endless groove.

2. In. a radiator, the combination of'a unit having a rib extending completely varound .thelower end ofthe same, vand a support. comprising av pair foi' sections'each provided Witha groove v rhich sections when fitted toi orm any .endless groove which the 3Q The combination of the radiator having .a rib on the lower end thereotand a support comprising a pair of sections each grooved to engage above and below the rib and provided with one-haltet a foot ,at each end.

4. "The combination of radiator units having endless ribs which extend-completely. around the ends thereof and;downwardly` from eachside ofthe radiator. tjtlie center, and a supportcomprising a pair of sections each provided with a groove Having thusdesebedmy intention, whatA pression.

tion ofA one of the ribsabovc'and b'elow, said sections, when fitted together forming an endless'groove. 1 y

5. A joint for connecting-opposedwalls of sheet-metal radiators comprising struck-upytapering open .bosses having flanges extendi ing from `the ta ering portions .outwardly throughout their another.

6. A joint `for.c zonnecting voppsosed Walls ofength and lapping over one sheet-metal.; radiators comprising a pair-of struck-up bosses held in interlocking rel ation,

the outer boss being ,understrains of. tension and the inner one .under strains ofcompres sion.

8. 'A joint for connecting opposed walls of slieet-metal radiators comprising af-pair of .tapering bosses having interlocked flanges,

.the outer one of which is under strains oftensionand .the inner of which is' under strains of compression. s 9. :A joint for connecting opposed walls of sheet-metal radiators comprising a pair of tapering bosses having outwardlyextendin'gr bosses curving into interlockin relation, the

Aouter boss being under strains-ot` tension and the inner boss being under strains of com- A The foregoing specification signed this 18th day of February, 1904.v WILLIAM R. KINNEAR.

In presence ol '-CLARENCE .D W. ROGERS.

GEoReE- M. TURNER. 

